20775105

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2089}}^1$

素因数の和:2130

約数の個数: 48

約数和(自身を含む): 41081040

約数和(自身を除く): 20305935

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2089, 3315, 6267, 9945, 10445, 18801, 27157, 31335, 35513, 81471, 94005, 106539, 135785, 177565, 244413, 319617, 407355, 461669, 532695, 1222065, 1385007, 1598085, 2308345, 4155021, 6925035, 20775105]

約数ペア:

[(1, 20775105), (3, 6925035), (5, 4155021), (9, 2308345), (13, 1598085), (15, 1385007), (17, 1222065), (39, 532695), (45, 461669), (51, 407355), (65, 319617), (85, 244413), (117, 177565), (153, 135785), (195, 106539), (221, 94005), (255, 81471), (585, 35513), (663, 31335), (765, 27157), (1105, 18801), (1989, 10445), (2089, 9945), (3315, 6267)]